Fixed bug setting pump curve params (#314) and in setting demand categories

-Split off calc. of a pump's curve coeffs. from getpumpparams to updatepumpparams.
- Fixed problem with initializing node demand category when default demand pattern set before node is created.
- Increased MAXLINE to 1024 to accomodate increase in MAXMSG.
- Replaced EN_geterror calls in input2.c with geterrmsg (it's bad form to call API functions in the body of the library)

src/funcs.h

@@ -75,6 +75,7 @@ int     addcurve(parser_data_t *par, char *);       /* Adds curve to data base
 STmplist *findID(char *, STmplist *);               /* Locates ID on linked list  */
 int     unlinked(EN_Project *pr);                   /* Checks for unlinked nodes  */
 int     getpumpparams(EN_Project *pr);              /* Computes pump curve coeffs.*/
+int     updatepumpparams(EN_Project *pr, int);      // Updates pump curve coeffs.
 int     getpatterns(EN_Project *pr);                /* Gets pattern data from list*/
 int     getcurves(EN_Project *pr);                  /* Gets curve data from list  */
 int     findmatch(char *, char *[]);                /* Finds keyword in line      */